Portable telephone



FIG. 1 is a top, left front perspective view of a portable telephone showing our new design;

FIG. 2 is a perspective view similar to FIG. 1, except that a part of the portable telephone has been shifted to a deployed position;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left-side elevational view thereof;

FIG. 6 is a right-side elevational view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof. 

The ornamental design for a portable telephone, as shown and described. 